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CVE-2023-53075

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ftrace: Fix invalid address access in lookup_rec() when index is 0 KASAN reported follow problem: BUG: KASAN: use-after-free…

Published May 2, 2025CWE-416EPSS 0.21%

Overview

CVE-2023-53075 is a high-severity vulnerability. It was published on May 2, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

ftrace: Fix invalid address access in lookup_rec() when index is 0

KASAN reported follow problem:

BUG: KASAN: use-after-free in lookup_rec

Read of size 8 at addr ffff000199270ff0 by task modprobe

CPU: 2 Comm: modprobe

Call trace:

kasan_report

__asan_load8

lookup_rec

ftrace_location

arch_check_ftrace_location

check_kprobe_address_safe

register_kprobe

When checking pg->records[pg->index - 1].ip in lookup_rec(), it can get a

pg which is newly added to ftrace_pages_start in ftrace_process_locs().

Before the first pg->index++, index is 0 and accessing pg->records[-1].ip

will cause this problem.

Don't check the ip when pg->index is 0.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/2a0d71fabfeb349216d33f001a6421b1768bd3a9Refgit.kernel.org/stable/c/2de28e5ce34b22b73b833a21e2c45ae3aade3964Refgit.kernel.org/stable/c/4f84f31f63416b0f02fc146ffdc4ab32723eb7e8Refgit.kernel.org/stable/c/7569ee04b0e3b32df79f64db3a7138573edad9bcRefgit.kernel.org/stable/c/83c3b2f4e7c61367c7b24551f4c6eb94bbdda283Refgit.kernel.org/stable/c/ac58b88ccbbb8e9fb83e137cee04a856b1ea6635Refgit.kernel.org/stable/c/ee92fa443358f4fc0017c1d0d325c27b37802504Refgit.kernel.org/stable/c/f1bd8b7fd890d87d0dc4dedc6287ea34dd07c0b4

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53075?

CVE-2023-53075 is a high-severity vulnerability. It was published on May 2, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-53075?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-53075?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-53075?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53075 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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